simply vs intensive

simply is not a noun while intensive is a noun.

Word	Noun	Adjective	Verb	Adverb
simply	No	No	No	Yes
intensive	Yes	Yes	No	No

simply (noun)	intensive (noun)
	a modifier that has little meaning except to intensify the meaning it modifies

simply (adjective)	intensive (adjective)
	of agriculture; intended to increase productivity of a fixed area by expending more capital and labor
	tending to give force or emphasis
	characterized by a high degree or intensity; often used as a combining form

simply (adverb)	intensive (adverb)
and nothing more
in a simple manner; without extravagance or embellishment
absolutely; altogether; really
(used for emphasis) absolutely